First writing may be 40,000 years earlier than thought.

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坚持创新驱动 充分释放要素效能

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Detecting e-bike battery fires, for example, is particularly difficult, since these can unfold suddenly. Some researchers are working on new ways of sensing smoke and fire, perhaps even more quickly than before. But, take note: any certified, working smoke alarm is better than nothing.

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Source: Computational Materials Science, Volume 266